AGI Security SYS-HC0851S2 - Manual (Page 35)

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Figure 2-12
The special 16-ch General 720P（S2）1U products ’ rear panel is shown as below. See
Figure 2-13.
Figure 2-13
Please refer to the following sheet for detailed information.
SN Icon Name Note
1 Power switch Power on/off button.
2 1～8(16) Alarm input
port 1～8(16)
 There are two types; NO (normal open)/NC
(normal close).
 When your alarm input device is using external
power, please make sure the device and the DVR
have the same ground.
NO1～NO3 Alarm output
port 1～3
 3 groups of alarm output ports. (Group 1：port
NO1～C1,Group 2:port NO2 ～C2,Group 3:port
NO3～C3）).Output alarm signal to the alarm
device. Please make sure there is power to the
external alarm device.
 NO：Normal open alarm output port.
 C：Alarm output public end.
C1～C3
3 VGA VGA video
output
port
VGA video output port. Output analog video signal.
Can connect to the monitor to view ananlog video
output.